Belitsoft > Reliable SaaS Development Company

Reliable SaaS Development Company

Software development company Belitsoft possesses significant experience in creating successful custom SaaS applications for various industries. Businesses from the USA, the UK, Israel, and Europe, including startups and enterprises, have benefited from our services by cutting costs through outsourcing the development of their SaaS products in Europe. Explore our recent SaaS case studies.

SaaS Web Development

We pay special attention to best practices to design reliable, secure, and cost-effective SaaS systems tailored to your needs.

SaaS Application Architecture. Our expertise is in building multi-tenant SaaS systems, where each of your customers shares common resources, from compute services to storage and messaging. Depending on your SaaS business needs, compliance requirements, and the nature of your solution, we can deploy a mixed-tenant architecture. This approach allows some premium tenants to have their own distinct database or even a completely independent infrastructure stack, such as individual Virtual Private Clouds. Meanwhile, other customers or certain microservices can continue in a multi-tenant setup.

SaaS Onboarding and Tenant Identity. Our approach goes beyond just implementing an identity provider for authentication; we ensure you always understand the tenant association of each user. You'll possess the capability to update, manage, and operate all customers collectively through shared services like user registration, management, and provisioning; tenant management and administration; system administration; billing management, and metrics management. A frictionless, repeatable onboarding self-service or internally executed process to both B2C and B2B customers enables you to support rapid growth in your customer base without incurring substantial operational overhead.

SaaS Customization. Anticipating that some of your customers may seek customizations, we can integrate these as configuration options available to all your clientele. By embedding these features at the heart of your offering, your SaaS company can support unique customer requirements without compromising operational efficiency or your business's innovation objectives. Belitsoft has expertise in application modernization. We add the most requested features from your customers to your existing SaaS platform. For examples of our work, check out our cases on healthcare SaaS customization, insurance SaaS customization and cybersecurity SaaS customization.

SaaS Usage Metrics. We identify workflows and events such as consumption data, and latency metrics, and then publish them to a data warehouse for aggregation. Based on that data, SaaS operations dashboards will provide you with both global and granular views of the health and activity of your tenants. Your team can drill into the operational data for individual tenants like the features tenants use, the load they place on your system, potential bottlenecks, cost profiles, and more to identify opportunities to evolve the SaaS system. Detailed dashboards and visualizations will display CPU and memory usage, total data transfer and network costs, and total data and storage costs. Based on that data, we can build alarms and automation to heal the system without experiencing an outage.

SaaS Performance. We design SaaS systems to ensure basic tenants don't impact the performance of premium ones. It can be based on the principle that a tenant's resource allocation should correlate with the revenue they generate. To manage this, we use throttling policies for individual tenants. When a tenant reaches their limit, throttling is applied. We can use the API Gateway to implement this throttling based on usage plans with set SLAs. We take measures to prevent disruptions from noisy tenants and ensure resources are safeguarded from cross-tenant access, whether using a serverless application microservices or Kubernetes container-based model.

SaaS Billing Architecture. You will get a clear picture of how your tenants are influencing costs, enabling you to make strategic decisions about how to build, sell, and operate your SaaS application. We design and develop a consumption mapping model to illustrate how tenants utilize the resources of your SaaS system. This model facilitates the allocation of specific consumption percentages to each tenant. The group of clients generating the least revenue will receive a smaller resource portion, while those generating the highest revenue will be allocated a more substantial pool. To align costs with actual activity and ensure effective resource consumption scaling, we measure and attribute costs in a multi-tenant environment. Our focus is on gathering data from areas that significantly impact your cloud infrastructure bill. As a result, you can gain insights into the per-tenant costs. We can integrate consumption-based pricing or pay-as-you-go models with other pricing strategies, such as subscription models. By integrating metering data with a billing system and establishing limits, we ensure the SaaS application's infrastructure consumption remains consistent with real-time tenant activity trends. This visibility into tenant cost profiles enables you to offer differentiated pricing and experiences suited to diverse customer profiles.

SaaS Testing

With our software testing services, we are not just ensuring that the functionality of your application works as expected. We also focus on testing SaaS system reliability challenges, like how it responds to the unexpected and how effectively it scales. Automation testing allows us to handle unpredictable load in a multi-tenant context, identifying key load and performance issues before they affect your customers. Our testing areas include:

Cross-tenant Impact Tests

We simulate scenarios where one tenant group places a disproportionate load and determine how the system responds. If the system consists of separate services, we test the scaling processes for each.

Tenant Consumption Tests

We track resource and tenant activity metrics, determine the difference, and apply it to a monitoring policy to identify suboptimal resource consumption.

Tenant Onboarding Tests

A spike should not disrupt the onboarding process, especially with dependencies on third-party integrations like billing. We test to ensure fallback strategies handle potential outages for these integrations effectively.

API Throttling Tests

“Free” subscribers should not impose the same load as “gold” subscribers. We test that throttling policies are applied successfully.

Tenant Isolation Testing

We ensure that each client's data and infrastructure are secured and not accessible by other clients.

Tenant Workflow Tests

We select key workflows of your solution and focus load on them to identify if they cause bottlenecks or over-allocation of resources.

Healthcare SaaS Application Development

EHR software
Example of a custom EHR SaaS software with health tracking, medication regimen notifications, appointment scheduling, and other functionality

We specialize in SaaS software development for healthcare. Partner with us to build EHR systems, clinical information systems, or remote patient monitoring solutions, and enhance patient care workflows, from hospitalization to pre-and-post-surgery care, as well as complications prevention management.

Use advanced technologies such as natural language processing for health data entry and prescription recognition, as well as AI to identify potential compliance risks and security threats. Connect with smart medical devices for remote patient care and continuous monitoring of vital signs.

API-based integration capabilities will help you automate data synchronization with other software tools, such as CRMs and HIEs.

We adhere to robust data encryption protocols for PHI and financial data, ensuring that your SaaS is fully compliant with HIPAA, FDA, and ONC regulations.

No Need to Explain Twice

Don’t Stress About Work Not Being Done

  • We sign the Statement of Work to specify the budget, deliverables and the schedule.
  • You see who’s responsible for what tasks in your favorite task management system.
  • We hold weekly status meetings to provide demos of what’s been achieved to hit the milestones.

No Question Goes Unanswered

  • We are eager to explain how things work, not overwhelming you with technical buzzwords.
  • You will easily understand the technology and things behind the scenes.
  • So you can assign less technical staff to a project from your side.

Mentally Synced With Your Team

  • Work with individuals who understand the US and EU business climate and can easily adjust to US/EU businesses requirements.
  • Create a hybrid composition with engineers working virtually in tandem, side by side with your existing team members.
  • Augment your US-based team (or teams in other locations) with dedicated software developers from the outsourced SaaS development firm Belitsoft, and operate on a 24-hour basis!
  • Quickly and cost-effectively acquire key resources, onboard them, and scale your team with highly skilled members to meet emerging market demands.

Stay Calm with No Surprise Expenses

  • You get a detailed project plan with costs associated with each feature developed.
  • Before bidding on a project, we conduct a review to filter out non-essential inquiries that can lead to over-estimation.
  • Regular reports guarantee you control the budget.

Be Confident Your Secrets are Secure

  • With our comprehensive security protocols and advanced encryption technologies, we employ robust security measures to ensure the utmost protection of your intellectual property.
  • Our infrastructure is designed to withstand potential threats, and we implement multi-factor authentication and data encryption to safeguard your sensitive information.
  • Your secrets are in safe hands.

Technologies and tools we use

Belitsoft is your partner for both the design and development parts. Start by presenting us with your idea and then, we'll create a document outlining milestones to make the project happen.

Belitsoft provides UI/UX designers, senior architects, front-end and backend SaaS developers, lead engineers, scrum masters, product managers, cloud architects, delivery managers, and project managers.

SaaS Back-end Development

As a SaaS software development company, Belitsoft uses SaaS development frameworks to handle all backend tasks. We also develop an administrator portal to manage forms, communications, and other properties.

SaaS Front-end Development
Javascript Frameworks
React Angular Vue Js
Next Js

SaaS Startup Development

Be better equipped to secure funding

We understand your budget constraints and the urgency to get to market. Our approach starts with understanding the user journeys to create the wireframes, then convert them into mock-ups and tie them all into storyboards with interactive prototypes, enabling you to launch quickly with a Proof-of-Concept or MVP, according to the roadmap.


Receive the highest positive feedback

To help you get a high adoption rate from customers and users for your never-before-seen SaaS solution, we focus on the UI/UX for business users, not just technology staff. It’s especially essential for mobile SaaS apps aiming at getting 5-star reviews on Apple App Store and Google Play Store. With an intuitive look and feel that aligns with your color schemes, our designs ensure a native performance on both iOS and Android devices.

Frequently Asked Questions

To choose a SaaS application development partner, consider their experience in the field. Evaluate their portfolio and case studies to see if they've worked on projects similar to yours. Also, read client testimonials and reviews on platforms such as Clutch and Goodfirms for insights into their reputation and work ethics. This information can guide you in making an informed decision when picking a partner.
Building and launching a product can take between 2 to 10 months, depending on factors like the application's complexity and scale, the technology stack, and the number of developers involved in the process.
The cost of developing a SaaS application can vary depending on the location of your team. Hiring from the US may cost around $120,000 per app, while outsourcing the development process to Eastern Europe could significantly reduce the cost to around $50,000.
Multi-tenant app architecture, in either single or multi-instance form, provides cost-effective and scalable solutions. It's easier to manage and accommodate new tenants compared to single-tenant architecture. This model allows the flexibility to start small and expand as needed, ensuring a seamless software experience for your clients.
Developing a scalable SaaS platform or app calls for careful attention to the architecture and infrastructure during planning. This includes optimizing the application's database and caching methods, and selecting a cloud-based platform capable of handling increasing traffic. Furthermore, adopting a microservices architecture is vital, as it enables developers to create and deploy individual application components, simplifying the expansion and modification of the program.
Safeguarding user data is a top priority when developing any SaaS application. Developers should employ a multi-layered security approach that incorporates encryption, access limitations, and frequent vulnerability assessments. It's also of utmost importance to comply with data privacy regulations such as the General Data Protection Regulation (GDPR) and to adhere to industry-standard security measures like the Payment Card Industry Data Security Standard (PCI-DSS).
When it comes to integrating third-party services into a SaaS application, careful planning is paramount. Selecting reliable services that align with your business needs is a must. Developers should ensure the integration is secure and doesn't compromise user data, and comprehensive testing of the integration is needed to confirm smooth operation before launch.
For effective testing and deployment of a SaaS application in a CI/CD environment, automation and collaboration between development and operations teams are necessary. Employing testing frameworks and techniques that support continuous testing and integration of new features is a significant aspect. Moreover, developers can take advantage of orchestration and containerization solutions to create applications that can be deployed swiftly and efficiently.


Offshore Dedicated Team of 100 QA Testers and Developers at 40% Lower Cost
Offshore Dedicated Team at 40% Lower Cost
Our client is a high-tech company. They’ve grown into a leading global provider of innovative network intelligence and security solutions (both software and hardware). Among their clients, there are over 500 mobile, fixed, and cloud service providers and over 1000 enterprises.
Custom Chatbot Development for a Chatbot Store / PAAS for Bot-Building
Custom Chatbot Development for a Chatbot Store / PAAS for Bot-Building
Today, our chatbots are widely used and help the customers of our Client to deliver the best possible messaging experience to the end-users.
Migration from Power BI service to Power BI Report Server
Migration from Power BI service to Power BI Report Server
Last year, the bank migrated its financial data reporting system from a cloud-based SaaS hosted on Microsoft’s cloud platform to an on-premises Microsoft solution. However, the on-premises Power BI Report Server comes with some critical limitations by default and lacks backward compatibility with its cloud equivalent.
Cloud Analytics Modernization on AWS for a Healthtech Company
Cloud Analytics Modernization on AWS for a Healthtech Company
Belitsoft designed a cloud-native web application for our client, a US healthcare solutions provider, using AWS. Previously, the company relied solely on desktop-based and on-premise software for its internal operations. To address the challenge of real-time automated scaling, we embraced a serverless architecture, using AWS Lambda.
15+ Senior Developers to scale B2B BI Software for the Company Gained $100M Investment
Senior Developers to scale BI Software
Belitsoft is providing staff augmentation service for the Independent Software Vendor and has built a team of 16 highly skilled professionals, including .NET developers, QA automation, and manual software testing engineers.
Proof of concept for validating the Idea of Cloud-Based Virtual Fuel Cards for a Logistics Startup
Proof of concept for validating the Business Idea for a Logistics Startup
We made Proof of Concept and Business Analysis to help the logistics startup validate the business idea of cloud-based virtual fuel cards before starting the full-scale development process.
Urgent Need For 15+ Skilled .NET and Angular Developers for a Fortune 1000 Telecommunication Company
Urgent Need For 15+ Skilled .NET and Angular Developers for a Fortune 1000 Telecommunication Company
One of our strategic client and partner (a large telecommunication company) provides a prepaid calling service that allows the making of cheap calls inside and outside the USA via Internet (PIN-less VoIP).
Custom CRM Database to Recruit and Retain Patients for Clinical Trials
Custom CRM Database to Recruit and Retain Patients for Clinical Trials
The Client is the US-based digital health company partnered with Belitsoft to make the patient recruitment workflow much more effective by developing a brand-new custom CRM Database.
Elearning Platform For Selling Driving Theory Online Course
Elearning Platform For Selling Driving Theory Online Course
Our Client, the Dutch startup founder Martin Beijer, addressed us to develop a driving theory online course business with automated online payment. The course was aimed to reduce the almost 50% fail rate at driving exams by making learning interactive and engaging. The program has already helped over 22,000 users to pass driving exams.
Customization of ready-to-use InsurTech CRM for individual needs of particular insurance organizations
Customization of ready-to-use InsurTech CRM for individual needs of particular insurance organizations
Our client is a global insurance custom software development company (1.6M+ EUR in revenues in 2016) with the teams in the USA, the UK, Estonia, Latvia, Lithuania, and Poland. The Client asked us to enlarge his team with dedicated software developers to speed up the process of maintaining his system and adding new complex custom features to it.
100+ API Integrations for Data Security Management Company
100+ API Integrations for Data Security Management Company
Our Client, the US data management company that sells software for managing sensitive and private data in compliance with regulatory laws, needed skilled developers for building API integrations to the custom software.
API Integration for Digital Transformation of a Freight Management Company
API Integration for Digital Transformation of a Freight Management Company
Our Client, a US-based freight management company, needed a custom core business app to optimize their workflows.
Custom Electronic Healthcare Record SaaS Development
Custom Electronic Healthcare Record SaaS Development
Belitsoft has successfully developed an MVP version of a cloud-based electronic healthcare record (EHR) platform for a well-known Company in the healthcare industry.
Mixed-Tenant Architecture for SaaS ERP to Guarantee Security & Autonomy for 200+ B2B Clients
SaaS ERP Mixed-Tenant Architecture for 200+ B2B Clients
A Canadian startup helps car service bodyshops make their automotive businesses more effective and improve customer service through digital transformation. For that, Belitsoft built brand-new software to automate and securely manage daily workflows.
Custom Chat-Bot and SAAS Web Platform For Lead Generation
Custom Chat-Bot and SAAS Web Platform For Lead Generation
For our client, chief executive officer of a startup company from Germany, we successfully developed a chatbot to convert website visitors to leads and a database application to store them.
Custom Agritech .NET and Angular-based SaaS platform for Farmers
Custom Agritech .NET and Angular-based SaaS platform for Farmers
One of our customers from Israel asked us to help him with the development of a special informational/expert system for agriculture. Main goal of this system is providing detailed information about servicing exact dozes of fertilizers for exact kind of plant and quantity.

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